Absolutely @FlemmingVesterg !

If the navigation link was added via the redirect tool by the former instructor, you should be able to edit the details via your course's settings under the Apps tab. However, if this was a tool added by the teacher or admin a while ago, those details won't be able to be updated, and you'll have to make a whole new link using the redirect tool, unless the website or app you're using has an external tool set-up available for your course.

I hope that helps!
Noah